1386280 has 32 divisors (see below), whose sum is σ = 3565440. Its totient is φ = 475200.

The previous prime is 1386271. The next prime is 1386283. The reversal of 1386280 is 826831.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (1386283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2196 + ... + 2755.

It is an arithmetic number, because the mean of its divisors is an integer number (111420).

2^1386280 is an apocalyptic number.

1386280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386280 is an abundant number, since it is smaller than the sum of its proper divisors (2179160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1386280 is a wasteful number, since it uses less digits than its factorization.

1386280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4969 (or 4965 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1386280 is about 1177.4039238936. The cubic root of 1386280 is about 111.5022555128.

The spelling of 1386280 in words is "one million, three hundred eighty-six thousand, two hundred eighty".